//
//  ViewController.m
//  07UIViewControllerLifeCycle
//
//  Created by dllo on 16/7/22.
//  Copyright © 2016年 dllo. All rights reserved.
//

#import "ViewController.h"
#import "FirstViewController.h"

@interface ViewController ()

@end

@implementation ViewController


- (void)loadView
{
    [super loadView];
    
    NSLog(@"%@--%s",[self class],__FUNCTION__);
    
   
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.view.backgroundColor = [UIColor redColor];
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:self action:@selector(barButtonClicked:)];
    
    
    
    
    
}


//视图将要出现，就会调用
- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    NSLog(@"%@--%s",[self class],__FUNCTION__);
}
//视图完全出现时，才会调用

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    NSLog(@"%@--%s",[self class],__FUNCTION__);

}
//视图将要消失
- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
    NSLog(@"%@--%s",[self class],__FUNCTION__);
    
}
//视图已经完全消失
- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];
    NSLog(@"%@--%s",[self class],__FUNCTION__);

}
- (void)barButtonClicked:(UIBarButtonItem *)barButtonItem

{
    FirstViewController *fvc = [[FirstViewController alloc] init];
    [self.navigationController pushViewController:fvc animated:YES];
    
    
    
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end
